Thread-cutter.



Wham m H. L. SPENCE.

THREAD CUTTER.

APPLICATION men AUG-16.

ISIS.

Patented May 1, 1917.

2 SHEETSSHEET l.

lwvewtoz EL. Spence,

H. L. SPENCE.

THREAD CUTTER.

APPLICATION FILED AUG-1'6. I916.

1,224},800 v Patented May 1, 1917.

2 SHEETS-SHEET 2- V T BW 5 1 a TQ 1 g N barren e mine PATENT oration.

HARRY L. SPENCE, 0F SANFORD, MAINE.

THREAD-CUTTER.

that the thread cutter may be used to sever threads connected with thebobbins on the lifter plate after the bobbins have been ,dofied.

The primary object of the invention is to provide a thread cutter of theclass described which is so constructed that at the beginning of thedofling of the bobbins, the cutter may be operated to knock from thebobbins, the drag washers associated therewith and after the bobbinshave been dofi'ed, the threads connected therewith may be severed closeto the bobbins so that no long ends are left upon the threads on thebobbins which would have a tendency upon the bobbins reaching the loomto cause the bobbins to hang before the thread hasbeen run 0E of thesame.

With these and other objects in view, the invention resides in the novelcombination and arrangement of parts, which will be hereinafterdescribed and particularly pointed out in the claims.

The preferred embodiment of the invention has been illustrated in theaccompanying drawings, although no restriction is necessarily made tothe precise details of construction therein shown, as changes, al-

terations, and modificationswithin the scope of the claims mayberesorted to when so desired.

Like characters of reference denote corresponding parts throughout theseveral views in the drawings, in which:

Figure 1 is a vertical sectional view through a portion of a spinningmachine Specification of Letters Patent.

PatentedMay 1, 1917..

Application filed. August 16, 1916. Serial No. 115,349.

showing the improved thread cutter applied to the bobbin lifting platethereon.

Fig. 2 is a top plan view of the bobbin lifting plate removed from thespinning machine'and showing the washer plate on the thread cutter in aninactive position.

Fig. 3 isa view similar to Fig. 2 showing the washer plate on the threadcutter in active position. I

Fig. 4 is a sectional view on the line 44 of Fig. 2.

Fig. 5 is a vertical transverse section on the line 55 of Fig. 2.

Fig. 6 is a view similar to Fig. 5 on the line 66 of Fig. 2.

Referring now to the drawings in detail, the numeral 1 designates aportion of an end of a spinning machine with which is shown connected aportion of the bobbin dofling mechanism 2 having connected therewith aspindle rail 3 arranged below a bobbin lifting plate 4 adapted to haveconnected therewith the usual plate raising and lowering mechanism (notshown in the drawing), said lifter plate having passing there throughand through the drag washers 5 thereon, spindles 6 mounted upon thespindle rail 3 and having connection with fliers 7 between the arms ofwhich are arranged the bobbins 8 seated upon the drag washers 5 andhaving passing therethrough the spindles 6.

Connected with the bottom face of the bobbin lifting plate 4 at spacedintervals throughout its length are spaced. brackets 9 having heads 10thereon extending beyond one side edge of the bobbin lifting plate 4:and provided with hearing openings 11 in which is mounted for turningmovement a sleeve 19, extending-the entire length of the bobbin liftingplate 4 and spaced above the -upper face of saidplate by the 'heads lf),

said sleeve having formed therein at intervals throughout its lengthcircumferentially arranged slots 13 and has connected therewith a plate14 extending the entire length of the sleeve and adapted to be broughtinto contact with the drag washers beneath the bobbins 8 in a mannerpresently described,

said sleeve having formed therein near one end an elongated andlongitudinally eXtend ing slot 15.

Arranged within the sleeve 12 and extending the entire length thereof isa tubular cutter rod 16 one end of which extends beyond an end on thesleeve 12 and is provided with a loop 17 forming a hand hold by means ofwhich the cutter rod may be slid longitudinally of the sleeve 12 tocause spaced and alined slots 18 in the peripheral surface thereof topass beneath the alined slots 13 in the sleeve 12 so that when the slots13 and 18 are in registration and the cutter rod 16 is slidlongitudinally of the sleeve 12 in either direction, the side walls ofthe slots 13 and 18 act as cutting blades.

Extending laterally from the cutter rod 16 near the loop 17 is a pin 19one end of which is received in the slot 15 in the sleeve 12, said pinlimiting the sliding movement of the cutter rod 16 within the sleeve 12and also enabling the sleeve 12 to be turned in the heads 17 by thecutter rod 16 to cause the plate 14 to be brought into contact with thedrag washers 5 beneath the spindle 6, so that the drag washers may beknocked from the bottom of the bobbins at the beginning of the clottingof the bobbins or held upon the bobbin lifting plate after the bobbinshave been doflied.

Through the provision of the tubular sleeve 12 and cutter rod 16, itwill be seen that an extremely strong construction of thread cutter isprovided which is not likely to bend or twist while in use and adds nounnecessary weight to the bobbin lifting plate of the spinning machine.

When the improved thread cutter is connected with the bobbin liftingplate of a spinning machine as shown in Fig. 1 in the drawings, thecutter may be used to knock the drag washers from the bobbins at thebeginning of the doiling of the same or to cut the thread connectedtherewith after the bobbins have been doffed in the following manner:

When a series of bobbins 8 have been filled with thread, the spinningmachine is stopped and the sleeve 12 oscillated in the heads 10 by meansof the cutter rod 16 to cause the plate 14 to be brought into contactwith the bobbins 8 so that when the mechanism (not shown in the drawing)connected with the bobbin lifting bar for lowering the same is operatedto lower the bobbin lifting plate, the drag washers 5 may besimultaneously knocked from the :bottom of the bobbins and held upon thebobbin lifting plate by the plate 14 as the bobbin lifting plate and thespindle rail are moved to their lowermost position.

Prior to the placing of the series of empty bobbins upon the bobbinlifting plate, the

plate 14 is restored to its normal position by means of the loop on thecutter rod 16, so that the threads connected with the dotted bobbins arereceived in the slots 13 and 18 in the sleeve 12 and cutter rod 16, sothat by moving the cutter rod 16 longitudinally of the sleeve 12 ineither direction, the thread connected with the dotted bobbins may besevered in such a manner as to prevent long ends being left between thebobbins and the thread cutter which cause the iianging of the bobbinswhen placed on the oom.

With the improved thread cutter in the position described, it will beseen that the series of empty bobbins may be placed on the bobbinlifting plate and the bobbins moved to their normal position and thespindles connected with the fliers 7 so that the thread may be startedupon the empty bobbins by suitable setting on mechanism (not shown).

From the foregoing description, taken in connection with theaccompanying drawings, it is at once apparent that a thread cutter forspinning machines has been provided which will not only cut the threadsconnected with dofl'ed bobbins in an efficient manner but may also beused to knock the drag washers from the bobbins at the beginning of thedofiing operation and to hold the said washers upon the bobbin liftingbar until the clotting operation is completed.

Having thus described the invention, what is claimed as new, is:

1. In a device of the class described, in combination, a bobbin liftingplate, a thread cutter connected with said bobbin lifting plate, and awasher engaging plate on said thread cutter.

2. In a device of the class described, in

combination, a bobbin lifting plate, a rota table thread cutterconnected with said bobbin lifting plate, and a washer engaging plateconnected with the thread cutter.

3. In a device of the class described, in combination, a bobbin liftingplate, a sleeve connected with said plate for turning movement, a washerengaging plate carried by said sleeve, and a cutter rod connected withthe sleeve for turning the same.

4. In a device of the class described, in combination, a bobbin liftingplate, a sleeve rotatably connected with said bobbin lifting plate, awasher engaging plate carried by said sleeve, and a cutter rod forturning said sleeve mounted to slide therein.

5. In a device of the class described, in combination, a bobbin liftingplate, a sleeve rotatably connected with said bobbin lift- 'tng plateand having spaced slots therein. a "washer engaging plate carried bysaid sleeve, and a cutter rod mounted to slide in said sleeve and havingconnection therewith whereby said sleeve may be turned by said spacedopenings therein and mounted to cutter rod. slide in said sleeve, saidcutter rod having 13 6. In a device of the class described, inconnection with the sleeve to enable the combination, a bobbin liftingplate, brackets same to be turned by the cutter rod, and an connectedwith said plate, a sleeve mounted operating handle on said cutter rod.

to turn in said brackets and having spaced In testimony whereof I aflixmy signature. slots therein, a washer engaging plate connected with saidsleeve, a cutter rod having HARRY L. SPENCE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Fatents,

, Washington, D. 0.

